Attachment for paper-cutting machines.



v 0. LARSEN. ATTACHMENT FOP. PAPER CUTTING MACHINES.

APPLICATION FILED MAR. 29, 1911.

Patented June 20,1911.

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0. LARSEN. I ATTACHMENT FOR PAPER CUTTING MACHINES. APPLICATION FILED111113.29, 1911.

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ED STATES 'ATE OLE LARSEN, OF SOUTH WINDI-IAM, CONNECTICUT, ASSIGNOR TOSMITH & WINCHESTER MANUFACTURING COMPANY, OF SOUTH WINDHAM, CONNECTICUT.

ATTACHMENT FOR PAPER-CUTTING MACHINES.

Specification of Letters Patent.

Application filed March 29, 1911.

T 0 all whom it may concern:

Be it known that I, OLE LARSEN, a citizen of the United States, residingat South Windham, in the county of Windham and State of Connecticut,have invented a new and useful Attachment for Paper-Cutting Machines;and I do hereby declare the following to be a full, clear, and exactdescr1ption of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This inventionrelates to a new and useful slot guard adapted for useupon paper trimming machines.

The object of the invention is to provide a steel band or tape, securedat one end adjacent to-one end of the guide slot for the gage, while theother end is carried by a spring tensioned drum, so that when the papergage is moved rearwardly of the bed of the paper cutting machine thesteel band or tape will automatically unreel from the drum, thus closingor covering the slot. Then when the gage is moved forwardly, the steelband or tape automatically reels upon the drum by the action of thespring.

Another object of the invention is to provide a roller or other suitablemeans for holding the steel tape or band in the slot, so that its uppersurface will be on a plane even with the surface of the bed, as thesteel band reels from the drum. In the drawings, however, there is onlyone form of the invention disclosed, but, in practical fields, this formmay require alterations, to which the applicant is entitled, providedthe alterations are comprehended by the appended claims.

The invention comprises further features and combinations of partshereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a View partly in elevation and partly insection of a portion of a paper cutting machine and its paper gage,showing the device applied thereto, and constructed in compliance withthe invention. Fig. 2 is a top plan View. Fig. 3 is a sectional view online 33 of Fig. 2, showing the construction of the spring tensioneddrum. Fig. 4 is a sectional View on line l4 of Fig. 2. Fig. 5 is asectional view on line 5-5 of Fig. 1, showing the roller for holding thesteel band or tape within the slot and even with the upper surface ofthe bed of the paper cut-ting machine. Fig. 6 is a transverse sectionalview on line 6-6 of Fig. 1, showing the manner of fastening the steelband or tape adjacent the end of the slot in the bed of the papercutting machine.

Referring to the drawings, 1 designates the bed of a paper cuttingmachine, in which a slot 2 is formed. This slot 2 constitutes a guidingmedium for the paper gage 3, as shown in the drawings.

Secured to the bed of the machine, adjacent one end of the slot, is asteel band or tape 4:. This steel band or tape is secured to the bed ofthe machine-by means of the block 5, through which the bolt or lag screw6 is threaded. The block 5 is arranged in the slot adjacent its end, andthe tape or band is secured to it by the screw 7.

The paper gage 3 carries what may be termed a spring tensioned drum 8.This spring-tensioned drum is mounted upon a shaft 9, which is mountedin bearings 10 of the gage. This drum comprises three parts, anintermediate part 11 and two outside parts or covers 12 and 13, whichare secured to the intermediate part, as shown at 14:. The intermediatepart, however, is provided with a central annular rib, between which andthe part or cover 12 the steel band or tape reels and unreels, as thegage is moved rearwardly or forwardly. The steel band or tape is securedto the spring tensioned drum by means of the pin 16. The intermediatepart is provided with a centrally arranged partition 17, which dividesthe intermediate part into two compartments 18 and 19. The compartment18 receives the extensions of the part 12, while the compartment 19receives the coiled spring 20. One end of this spring is secured to theshaft 9 (which is secured in its bearings against rotary movement by theset screw 22), while the other end of the spring is secured on a stud 23of the part 13. Thus it will be seen that as the gage is movedrearwardly, the steel band or tape will unreel from the spring tensioneddrum against the action of the spring and when the gage is movedforwardly, the action of the spring causes the steel hand or tape toreel upon the drum.

Bolted or otherwise secured to a portion I overhanging portion) is aroller 29. This roller 29 is adapted to engage the upper surface of thesteel band or tape, so as to hold the same within the slot 2 of the bedof the paper cutting machine, sufliciently so that the upper surface ofthe steel band or tape will be disposed on a plane even with the uppersurface of the bed of the machine,

thus suiiiciently and effectively closing or covering the slot, as thegage moves rearwardlyi From the foregoing, it will be noted that therehas been devised a practicable, simple and efficient slot guard, and onewhich Will fulfil the Various requirements in this particular art ofindustry.

The invention having been set forth, what is claimed as new and usefulis 1. In a paper trimming machine, a table bed having formed therein aguide slot, a follower slidably mounted on the table and in said slotand provided with a spring tensioned drum, and means secured at one endadjacent one end of the slot and reeled about the drum with its otherend secured thereto for closing the slot.

2. In a paper trimming machine, a table bed having formed therein aguide slot, a follower slidably mounted on the table and in said slotand provided with a spring tensioned drum, a flexible tape membersecured at one end adjacent one end of the slot and reeled about thedrum with its other end secured thereto for closing the slot, and meansfor bearing against the tape member for holding it in the slot with itsupper surface even with the surface of the table.

3. In a paper trimming machine, a table bed having formed therein aguide slot, a follower slidably mounted on the table and in said slotand provided with a spring tensioned drum, a flexible tape membersecured at one end adjacent one end of the slot and reeled about thedrumwith its other end secured thereto for closing the slot.

4. In a paper trimming machine, a table bed having formed therein aguide slot, a follower slidably mounted on the table and in said slotand provided with a spring tensioned drum, a flexible tape membersecured at one end adjacent one end of the slot and reeled about thedrum with its other end secured thereto for closing the slot, a bracketmember carried by the follower, a roller revolubly carried by thebracket member for engagement with the upper surface of the tape memberfor holding it in the slot with its upper surface even with the surfaceof the table.

5. In a paper trimming machine, a table bed having a guide slot formedtherein, a follower gage slidably mounted upon the table and in saidslot and provided with a spring tensioned drum, a block secured in theslot at one end thereof, means extending through the table bed andthreaded into the block, a flexible metallic tape member secured to theblock at one end and reeled about the drum with its other end securedthereto for closing the slot, a bracket member carried by the followergage, a roller revolubly carried by the bracket member for engagementwith the upper surface of the tape member for holding it in the slotwith its upper surface even with the surface of the table.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OLE LARSEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

